Joe Maddon’s Defensive Calculus
Ahead of the Wild Card Game between the Chicago Cubs and the Pittsburgh Pirates, much of analysis in between the announcement of the starting lineups was focused on the potential trade-off of offense for defense by the Pirates and vice versa for the Cubs. Clint Hurdle chose to start Sean Rodriguez instead of defensive liability Pedro Alvarez at first base. Joe Maddon chose to put Kyle Schwarber in right field and Kris Bryant in left field. Although the Cubs got the win, both moves were reasonable. In hindsight, the move by Maddon was not a big departure from normality, but whether the same justifications exist in the upcoming series against the Cardinals is debatable.
Putting third baseman Kris Bryant out in left field and inserting Tommy La Stella at third base was the biggest surprise about the Cubs lineup against the Pirates, but that position shift as well as others made a bit earlier in the year, put the Cubs defense out of position on almost every position in the field. Catcher Miguel Montero, first baseman Anthony Rizzo, and center fielder Dexter Fowler were in their typical everyday positions, but the other five players were playing at positions other than their typical 2015 setup. The chart below shows the percentage of innings each player played at the position where they started in the Wild Card game.

WC Position | Defensive Innings at WC Position | Total Defensive Innings | % of Innings at WC Position | |
Kris Bryant | LF | 39 | 1313.1 | 3.0% |
Kyle Schwarber | RF | 14 | 445.2 | 3.1% |
Starlin Castro | 2B | 258 | 1201 | 21.5% |
Tommy La Stella | 3B | 52 | 140 | 37.1% |
Addison Russell | SS | 471.1 | 1217.1 | 38.7% |